Question: Phylum Porilera la. Body lacks symmetry; body porous . lc. Body with bilateral symmetry. . . . 2a…


Phylum Porilera la. Body lacks symmetry; body porous . lc. Body with bilateral symmetry. . . . 2a. Body soft; dise, tube or saclike with radiating tentacles..............Phylum Cnidaria 2b. Body hard, spiny or leathery; body parts may be in fives Phylum Echinode 3a. Endoskeletons with backbones or cartilage; appendages when present of two rmata 3b. Exoskeletons; appendages, when present, of three or more pairs... 3c. No skeleton or legs 4a. Jointed legs; exoskeletons 4b. Without jointed legs; no-skeleton, but shell may be present. . . . . . . . 5a. Body many times longer than wide, but no shell 5b. Body in a shell; Phylum Chordata (Subphylum Vertebrata) (go to Chordata Key) 4 Phylum Arthropoda (go to Arthropoda Key) . . . . 6 protrusible structure used for locomotion . . Phylum Mollusca .Phylum Platyhelminthes . . .. 6a. Body flat; with or without segmentation 6b. Body round when viewed from end... 7a. Body with segmentation Phylum Annelida A Key of the Phylum Arthropoda lb. Paired antennae absent; four pairs of walking legs 1c. Paired antennae absent; five pairs of walking legs with claws .............Class Merostomata 2a. One pair of antennae . . 2b. Two pair of antennae; one long, one short. 3a. Three pair of walking legs.. 3b. More than three pair of walking legs....... .3 Subphylum Crustacea Class Insecta Subphylum Myriapoda A Key of the Phylum Chordata, Subphylum Vertebrata 2a. 2b. Body covering soft and moist; if feet, without claws Body covering dry and scaly: if feet, with claws. . .. . . Class Amphibia Class Reptilia Class Aves Class Mammalia 64
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Phylum Porilera la. Body lacks symmetry; body porous . lc. Body with bilateral symmetry. . . . 2a. Body soft; dise, tube or saclike with radiating tentacles…………..Phylum Cnidaria 2b. Body hard, spiny or leathery; body parts may be in fives Phylum Echinode 3a. Endoskeletons with backbones or cartilage; appendages when present of two rmata 3b. Exoskeletons; appendages, when present, of three or more pairs… 3c. No skeleton or legs 4a. Jointed legs; exoskeletons 4b. Without jointed legs; no-skeleton, but shell may be present. . . . . . . . 5a. Body many times longer than wide, but no shell 5b. Body in a shell; Phylum Chordata (Subphylum Vertebrata) (go to Chordata Key) 4 Phylum Arthropoda (go to Arthropoda Key) . . . . 6 protrusible structure used for locomotion . . Phylum Mollusca .Phylum Platyhelminthes . . .. 6a. Body flat; with or without segmentation 6b. Body round when viewed from end… 7a. Body with segmentation Phylum Annelida A Key of the Phylum Arthropoda lb. Paired antennae absent; four pairs of walking legs 1c. Paired antennae absent; five pairs of walking legs with claws ………….Class Merostomata 2a. One pair of antennae . . 2b. Two pair of antennae; one long, one short. 3a. Three pair of walking legs.. 3b. More than three pair of walking legs……. .3 Subphylum Crustacea Class Insecta Subphylum Myriapoda A Key of the Phylum Chordata, Subphylum Vertebrata 2a. 2b. Body covering soft and moist; if feet, without claws Body covering dry and scaly: if feet, with claws. . .. . . Class Amphibia Class Reptilia Class Aves Class Mammalia 64

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